Sitting at the cosmetics counter for a makeover can leave even an extrovert feeling sheepish. But you can revamp your looks in private at Taaz.com—just upload a digital photo of yourself to start playing with the site's broad palette of hairstyles and makeup shades (O's editor-at-large, Gayle King, recently gave it a whirl). And the most fun? Tweaking photos of your favorite celebrity, your kid, or your husband. Go on, a little eyeliner never hurt anyone.